Effect of oil/water ratio on phase behavior of anionic micro-emulsion

GU Yinglu; LIU Hui e; CHEN Shuang; WANG Long; LIU Yutong

doi:10.11949/0438-1157.20190040

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Effect of oil/water ratio on phase behavior of anionic micro-emulsion

Surface and interface engineering | 更新时间：2026-07-24

- Effect of oil/water ratio on phase behavior of anionic micro-emulsion
- CIESC Journal Vol. 70, Issue 7, Pages: 2626-2635(2019)
- 作者机构：
  
  中国石油大学（华东）重质油国家重点实验室，山东青岛 266580
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190040
  CLC： O 648.2+3
- Received：14 January 2019，
  
  Revised：2019-04-18，
  
  Online First：24 July 2026，
  
  Published：05 July 2019
- 稿件说明：
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谷莹露, 刘会娥, 陈爽, 王龙, 刘宇童. 油水比对阴离子型微乳液相行为的影响[J]. 化工学报, 2019, 70(7): 2626-2635

GU Yinglu, LIU Hui e, CHEN Shuang, WANG Long, LIU Yutong. Effect of oil/water ratio on phase behavior of anionic micro-emulsion[J]. CIESC Journal, 2019, 70(7): 2626-2635
谷莹露, 刘会娥, 陈爽, 王龙, 刘宇童. 油水比对阴离子型微乳液相行为的影响[J]. 化工学报, 2019, 70(7): 2626-2635 DOI： 10.11949/0438-1157.20190040.

GU Yinglu, LIU Hui e, CHEN Shuang, WANG Long, LIU Yutong. Effect of oil/water ratio on phase behavior of anionic micro-emulsion[J]. CIESC Journal, 2019, 70(7): 2626-2635 DOI： 10.11949/0438-1157.20190040.

摘要

微乳液由水、油、盐、表面活性剂及助表面活性剂组成，其相行为及增溶情况受各组分的影响。研究发现，在SDBS（SDS、SLS）/航空煤油/水/正丁醇/氯化钠体系中，随着NaCl含量的不断增多，微乳液体系发生Winsor Ⅰ型→Winsor Ⅲ型→Winsor Ⅱ型的相态转变。固定水的用量，通过油扫实验不断改变体系中的油水比，利用相图研究油水比对微乳液相行为的影响，并通过冷冻电镜对不同相态下微乳液的微观形貌进行了表征。随着油水比的增加，在低盐度下，体系由胶团溶液转变为Winsor Ⅰ型；而在高盐度下，体系发生由胶团溶液→Winsor Ⅱ型→Winsor Ⅲ型→Winsor Ⅰ型的相态转变。盐度一定时，微乳液的中相形成及消失所需的油量会随着表面活性剂浓度的增多而增多，且三种表面活性剂中，表面活性剂的增溶能力的大小顺序为SDBS>SDS>SLS，对煤油的敏感程度顺序为SLS>SDS>SDBS。

Abstract

Micro-emulsion is composed of water

oil

salt

surfactant and co-surfactant. Its phase behavior and solubilization performance are affected by each component. It is found that in the SDBS (SDS

SLS) / aviation kerosene / water / n-butanol / NaCl system

with the increase of NaCl content

the phase inversed from Winsor Ⅰ type to Winsor Ⅲ type to Winsor Ⅱ type. The effect of oil-water ratio on the phase behavior of microemulsion was studied by phase diagram.The micromorphology of the micro-emulsion under different phase conditions was characterized by cryo-electron microscopy. With the increase of oil-water ratio

the system changed from micelle solutin to Winsor type Ⅰ under low salinity. While

at high salinity

with the increase of oil/ water ratio

the phase inversed from Winsor Ⅱ type to Winsor Ⅲ type to Winsor Ⅰ type. When the salinity is constant

the amount of oil required for the formation and disappearance of the middle phase of the micro-emulsion will increase with the increase of surfactant concentration. In addition

among the three surfactants

the order of solubilization ability of surfactants is SDBS > SDS > SLS

and the order of sensitivity to kerosene is SLS > SDS > SDBS.

关键词

Keywords

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